Brooks Platt has run a marathon before.
He has run an Ironman triathlon before, which has a full-length marathon as part as its course.
But he's never done a dance marathon before, and that's where he's a little unsure how well he'll hold up.
"I heard they can be exhausting," Platt said of the prospect of dancing for 36 hours during the Children's Miracle Network Dance Marathon to be held Oct. 26 at Indiana University, where Platt is a junior.
"You have to do more than just stand around," Platt said, "though you do get some breaks."
Platt will get no such breaks during Sunday's Ironman Louisville in Louisville, Ky., that consists of a 2.4-mile swim that encircles Towhead Island in the Ohio River, 112-mile bike ride and the aforementioned 26.2-mile run.
"For me, it's the bike ride that's the toughest," Platt said. "I have a good running and swimming background."
Platt ran cross country at Munster High School, but was plagued with injuries throughout his career, mainly shin splints. To help him recover, Munster swim coach Matt Pavlovich allowed Platt to train with his team.
"But I didn't compete with the team at meets," Platt said. "I just did everything they did at practice."
Platt is using the Ironman as an opportunity to help bolster his pledge drive for the subsequent dance marathon.
Proceeds from the Children's Miracle Network benefit the Riley Children Hospitals. He said that he has already garnered a lot of support.
"That's something that's very close to my heart," said Platt, who is studying to be a pediatrician. "I consider myself a kid at heart. I've decided to dedicate my life to helping children in need."